| /* |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "config.h" |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include "libavutil/mem.h" |
| #include "adts_header.h" |
| #include "adts_parser.h" |
| |
| int av_adts_header_parse(const uint8_t *buf, uint32_t *samples, uint8_t *frames) |
| { |
| #if CONFIG_ADTS_HEADER |
| GetBitContext gb; |
| AACADTSHeaderInfo hdr; |
| int err = init_get_bits8(&gb, buf, AV_AAC_ADTS_HEADER_SIZE); |
| if (err < 0) |
| return err; |
| err = ff_adts_header_parse(&gb, &hdr); |
| if (err < 0) |
| return err; |
| *samples = hdr.samples; |
| *frames = hdr.num_aac_frames; |
| return 0; |
| #else |
| return AVERROR(ENOSYS); |
| #endif |
| } |
| |
| int avpriv_adts_header_parse(AACADTSHeaderInfo **phdr, const uint8_t *buf, size_t size) |
| { |
| #if CONFIG_ADTS_HEADER |
| int ret = 0; |
| int allocated = 0; |
| GetBitContext gb; |
| |
| if (!phdr || !buf || size < AV_AAC_ADTS_HEADER_SIZE) |
| return AVERROR_INVALIDDATA; |
| |
| if (!*phdr) { |
| allocated = 1; |
| *phdr = av_mallocz(sizeof(AACADTSHeaderInfo)); |
| } |
| if (!*phdr) |
| return AVERROR(ENOMEM); |
| |
| ret = init_get_bits8(&gb, buf, AV_AAC_ADTS_HEADER_SIZE); |
| if (ret < 0) { |
| if (allocated) |
| av_freep(phdr); |
| return ret; |
| } |
| |
| ret = ff_adts_header_parse(&gb, *phdr); |
| if (ret < 0) { |
| if (allocated) |
| av_freep(phdr); |
| return ret; |
| } |
| |
| return 0; |
| #else |
| return AVERROR(ENOSYS); |
| #endif |
| } |